From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ben Warren <biggerbadderben@gmail.com>
Date: Tue, 08 Jan 2008 10:35:13 -0500
Subject: [U-Boot-Users] Do we enable Interrupts in U-Boot?
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References: <7f245da80801080411g4f8e4f82xdb0f6271a8b20f5a@mail.gmail.com>	<200801081334.49170.sr@denx.de>	<7f245da80801080452p3c939977i649b5ecede367348@mail.gmail.com>	<200801081427.56350.sr@denx.de>
	<7f245da80801080727o460b630esf14697414f76ce33@mail.gmail.com>
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Chetan Nanda wrote:
> On 1/8/08, Stefan Roese <sr@denx.de> wrote:
>   
>> On Tuesday 08 January 2008, Chetan Nanda wrote:
>>     
>>> In that case there must be some threads that continuously check for
>>> pending requests from UART, ETHERNET or so ..
>>>       
>> Threads? U-Boot is not an full blown OS. No threads are needed in this
>> bootloader.
>>
>>     
>>> But I don't find any sort  of threading inside u-boot code
>>>       
>> U-Boot "sits" there and waits for some input from the console, or for an
>> ethernet reply packet. This can be done using polling without any performance
>> penalty.
>>
>>     
> Thanks, for explaining the things,
> But how can we wait for two events simultaneously (that is also under
> a single thread of execution)? Can you give me pointer to the code ?
>   
We don't. Everything's single-threaded and poll-based.

regards,
Ben